Dell S2421H, User Manual

Page 1: ...Model S2421HN S2721HN S2421NX S2721NX Regulatory model S2421Ht S2721Ht Dell S2421HN S2721HN S2421NX S2721NX Monitor User s Guide ...

Page 2: ...r loss of data if instructions are not followed WARNING A WARNING indicates a potential for property damage personal injury or death Copyright 2020 Dell Inc or its subsidiaries All rights reserved Dell EMC and other trademarks are trademarks of Dell Inc or its subsidiaries Other trademarks may be trademarks of their respective owners 2020 07 Rev X00 ...

Page 3: ...pecifications 11 Resolution specifications 12 Preset display modes 13 Electrical specifications 13 Physical characteristics 14 Environmental characteristics 15 Power management modes 16 Pin Assignments 18 Plug and play 19 LCD monitor quality and pixel policy 19 Ergonomics 19 Handling and moving your display 21 Maintenance guidelines 22 Cleaning your monitor 22 Contents 3 ...

Page 4: ...onitor 31 Power on the monitor 31 Using the front panel controls 31 Using the OSD lock function 33 Front panel button 35 Using the On Screen Display OSD menu 36 Accessing the menu system 36 OSD warning messages 47 Setting the maximum resolution 49 Troubleshooting 50 Self test 50 Built in diagnostics 51 Common problems 52 Product specific problems 54 Appendix 55 FCC notices U S only and other regul...

Page 5: ...ed to operate with the AC power available in your location Keep the monitor in room temperature Excessive cold or hot conditions can have an adverse effect on the liquid crystal of the display Do not subject the monitor to severe vibration or high impact conditions For example do not place the monitor inside a car trunk Unplug the monitor when it is going to be left unused for an extended period o...

Page 6: ...components and see Contacting Dell if anything is missing NOTE Some components may be optional and may not ship with your monitor Some features may not be available in certain countries Display S2421 S2721 HN S2421 S2721 NX Stand riser S2421 S2721 HN S2421 S2721 NX Stand base S2421 S2721 HN S2421 S2721 NX VESA cover Power cable varies by country ...

Page 7: ...ull screen support for lower resolutions S2721HN S2721NX 68 6 cm 27 in active area display Measured diagonally 1920 x 1080 16 9 resolution plus full screen support for lower resolutions Tilt adjustment capability Removable pedestal and Video Electronics Standards Association VESA 100 mm mounting holes for flexible mounting solutions Ultra thin bezel minimizes the bezel gap in multi monitor usage e...

Page 8: ...ng parts and controls Front view 1 2 S2421HN S2721HN 1 2 S2421NX S2721NX Label Description Use 1 Function buttons For more information see Operating the monitor 2 Power on off button with LED indicator To turn the monitor on or off ...

Page 9: ...X Wh XXXXX AddressforEUOnly RaheenBusinessPark LimerickIreland www dell com regulatory_compliance XXXXXXXX XXXXX R R WT1 S2421Ht И005 20 This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operat...

Page 10: ...sold separately 2 Power connector Connect the power cable shipped with your monitor 3 HDMI port 1 Connect your computer with HDMI cable 4 HDMI port 2 Connect your computer with HDMI cable 5 Audio Line out port Connect speakers to playback audio coming through HDMI audio channel Only two channel audio is supported NOTE The audio line out port does not support headphones ...

Page 11: ...0 2745 mm 0 3114 mm x 0 3114 mm Pixel per inch PPI 92 56 81 59 Viewing angle Horizontal 178 typical Vertical 178 typical Brightness 250 cd m typical 300 cd m typical Contrast ratio 1000 to 1 typical Display screen coating Anti glare treatment of the front polarizer 3H hard coating Backlight LED edgelight system Response Time Gray to Gray 8 ms normal 5 ms fast 4 ms extreme Color depth 16 7 million ...

Page 12: ...lock slot cable lock sold separately At panel native resolution only under Custom Mode preset Resolution specifications Model S2421HN S2421NX S2721HN S2721NX Horizontal scan range 30 kHz to 83 kHz Vertical scan range 48 Hz to 75 Hz Maximum preset resolution 1920 x 1080 at 60 Hz Video display capabilities HDMI playback 480i 480p 576i 576p 720p 1080i 1080p ...

Page 13: ... 65 0 VESA 1024 x 768 60 0 75 0 78 8 MAC 1152 x 864 67 5 75 0 108 0 VESA 1280 x 1024 64 0 60 0 108 0 VESA 1280 x 1024 80 0 75 0 135 0 VESA 1600 x 900 60 0 60 0 108 0 CVT 1920 x 1080 67 5 60 0 148 5 CVT 1920 x 1080 83 89 75 0 174 5 Electrical specifications Model S2421HN S2421NX S2721HN S2721NX Video input signals Digital video signal for each differential line Per differential line at 100 ohm impe...

Page 14: ...ght 322 6 mm 12 70 in 363 6 mm 14 32 in Width 537 8 mm 21 17 in 609 9 mm 24 01 in Depth 53 8 mm 2 12 in 54 0 mm 2 13 in Stand dimensions Height 171 6 mm 6 76 in 176 0 mm 6 93 in Width 249 0 mm 9 80 in 257 2 mm 10 13 in Depth 152 8 mm 6 02 in 186 8 mm 7 35 in Weight Weight with packaging 5 9 kg 13 00 lb 7 6 kg 16 76 lb Weight with stand assembly and cables 4 1 kg 9 04 lb 5 2 kg 11 46 lb Weight with...

Page 15: ... glass and Mercury Free for the panel only Temperature Operating 0 C to 40 C 32 F to 104 F Non operating 20 C to 60 C 4 F to 140 F Humidity Operating 10 to 80 non condensing Non operating 5 to 90 non condensing Altitude Operating maximum 5 000 m 16 404 ft Non operating maximum 12 192 m 40 000 ft Thermal dissipation S2421HN S2421NX 71 65 BTU hour maximum 54 59 BTU hour typical S2721HN S2721NX 98 95...

Page 16: ...HN S2421NX VESA Modes Horizontal Sync Vertical Sync Video Power Indicator Power Consumption Normal operation Active Active Active White 21 W maximum 16 W typical Active off mode Inactive Inactive Off White Glowing Less than 0 3 W Switch off Off Less than 0 3 W Power Consumption Pon 11 74 W Total Energy Consumption TEC 37 3 kWh S2721HN S2721NX VESA Modes Horizontal Sync Vertical Sync Video Power In...

Page 17: ...able from the monitor Maximum power consumption with maximum luminance This document is informational only and reflects laboratory performance Your product may perform differently depending on the software components and peripherals you ordered and shall have no obligation to update such information Accordingly the customer should not rely upon this information in making decisions about electrical...

Page 18: ...gnments HDMI port Pin number 19 pin side of the connected signal cable 1 TMDS DATA 2 2 TMDS DATA 2 SHIELD 3 TMDS DATA 2 4 TMDS DATA 1 5 TMDS DATA 1 SHIELD 6 TMDS DATA 1 7 TMDS DATA 0 8 TMDS DATA 0 SHIELD 9 TMDS DATA 0 10 TMDS CLOCK 11 TMDS CLOCK SHIELD 12 TMDS CLOCK 13 CEC 14 Reserved N C on device 15 DDC CLOCK SCL 16 DDC DATA SDA 17 DDC CEC Ground 18 5 V POWER 19 HOT PLUG DETECT ...

Page 19: ... monitor screen for extended periods of time may result in eye strain For comfort and efficiency observe the following guidelines when setting up and using your computer workstation Position your computer so that the monitor and keyboard are directly in front of you as you work Special shelves are commercially available to help you correctly position your keyboard To reduce the risk of eye strain ...

Page 20: ...e resting flat on the floor When sitting make sure that the weight of your legs is on your feet and not on the front portion of your seat Adjust your chair s height or use a footrest if necessary to maintain a proper posture Vary your work activities Try to organize your work so that you do not have to sit and work for extended periods of time Try to stand or get up and walk around at regular inte...

Page 21: ...all cables from the monitor Place the monitor in the original box with the original packing materials Hold the bottom edge and the side of the monitor firmly without applying excessive pressure when lifting or moving the monitor When lifting or moving the monitor ensure the screen is facing away from you and do not press on the display area to avoid any scratches or damage When transporting the mo...

Page 22: ...clean your anti static screen lightly dampen a soft clean cloth with water If possible use a special screen cleaning tissue or solution suitable for the anti static coating Do not use benzene thinner ammonia abrasive cleaners or compressed air Use a lightly dampened warm cloth to clean the monitor Avoid using detergent of any kind as some detergents leave a milky film on the monitor If you notice ...

Page 23: ...tand that you purchased from any other source follow the set up instructions that were included with the stand CAUTION Place monitor of a flat clean and soft surface to avoid scratching the display panel To attach the monitor stand 1 Align the tabs on the stand base with the slots on the stand riser 2 Insert the stand riser on the stand base firmly 3 Open the screw handle at the bottom of the stan...

Page 24: ... the monitor protective cover and install the VESA screw cover 5 Align the tabs on the stand riser bracket with the grooves at the back of the monitor 6 Insert the stand riser bracket into monitor groove until it snaps into place 5 6 ...

Page 25: ...25 CAUTION Hold the stand riser firmly when lifting the monitor to avoid any accidental damage 7 Hold the stand riser and lift the monitor carefully then place it on a flat surface 8 Lift the protective cover from the monitor ...

Page 26: ... your monitor If you are connecting a stand that you purchased from any other source follow the set up instructions that were included with the stand With the stand attached to the monitor you can tilt the monitor for the most comfortable viewing angle 5 21 NOTE The stand is detached when the monitor is shipped from the factory ...

Page 27: ... follow the Safety instructions To connect your monitor to the computer 1 Turn off your computer 2 Connect the HDMI cable from your monitor to the computer 3 Turn on your monitor 4 Select the correct input source from the OSD Menu on your monitor and then turn on your computer Connecting the HDMI cable HDMI HDMI ...

Page 28: ...ring your monitor using Kensington lock optional The security lock slot is located at the bottom of the monitor See Security lock slot For more information on using the Kensington lock purchased separately see the documentation that is shipped with the lock Secure your monitor to a table using the Kensington security lock NOTE The image is for the purpose of illustration only Appearance of the loc...

Page 29: ...rchased from any other source follow the set up instructions that were included with the stand To remove the stand 1 Place a flat cushion or a sitting mat near the edge of a table and place the monitor on it with the display facing down 2 Press the stand down to access to the release latch 3 Use a long screwdriver to press the release latch 4 While pressing the release latch slide out the stand as...

Page 30: ...ompliance XXXXXXXX XXXXX R R WT1 S2421Ht И005 20 This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation X X X X X X X X IS 13252 Part 1 IEC 60950 1 R 41071650 www bis gov in For UK only Ca...

Page 31: ...n to turn on the monitor Using the front panel controls Use the control buttons at the bottom edge of the monitor to adjust the specifications of the image being displayed When using the control buttons an On Screen Display OSD menu appears on the screen with numeric values 3 4 5 1 2 ...

Page 32: ...tton to choose from a list of input sources 3 Menu Use this menu button to launch the on screen display OSD and select the OSD menu See Accessing the menu system 4 Exit Use this button to go back to the main menu or exit the OSD main menu 5 Power with power light indicator Use the Power button to turn the monitor On and Off The white LED indicates the monitor is On and fully functional A breathing...

Page 33: ...play Menu Others Brightness Contrast Power Button Language Transparency Timer Menu Power Buttons Disable Lock Reset Menu Menu Buttons 2 The following message appears Dell 24 27 Monitor Are you sure you want to lock the Menu Buttons To unlock the Buttons refer to the User s Guide Yes No S2421HN S2421NX S2721HN S2721NX 3 Select Yes to lock the buttons Once locked pressing any control button will dis...

Page 34: ...user to turn off the monitor using the power button 3 Menu and Power Button lock Use this option to lock OSD menu and power button to turn off the monitor 4 Built in Diagnostics Use this option to run the built in diagnostics see Built in Diagnostics To unlock the button s Press and hold Button 4 for foru seconds until a menu appears on the screen The following table describes the options to unloc...

Page 35: ...his option to unlock OSD menu and power button to turn off the monitor 4 Built in Diagnostics Use this option to run the built in diagnostics see Built in Diagnostics Front panel button Use the buttons on the front of the monitor to adjust the image settings 2 3 1 Front Panel Button Description 1 Up Down Use the Up increase and Down decrease buttons to adjust items in the OSD menu 2 OK Use the OK ...

Page 36: ... menu and display the main menu Dell 24 27 Monitor Input Source Color Personalize Display Menu Others Brightness Contrast 75 75 2 Press the and buttons to move between options As you move from one icon to another the option name is highlighted 3 Press the or or button once to activate the highlighted option 4 Press the and buttons to select the desired parameter 5 Press to enter the slide bar and ...

Page 37: ... the button to decrease brightness Contrast Adjust the Brightness first and then adjust Contrast only if further adjustment is necessary Press the button to increase contrast and press the button to decrease contrast between 0 and 100 Contrast adjusts the difference between darkness and lightness on the monitor Input Source Use the Input Source menu to select between different video inputs that ar...

Page 38: ...nnector Use to select the HDMI input source Auto Select Use to select Auto Select the monitor scans for available input sources Reset Input Source Resets your monitor s Input Source settings to the factory defaults Color Use the Color menu to adjust the color setting mode Dell 24 27 Monitor Input Source Color Personalize Display Menu Others Brightness Contrast Preset Modes Standard Input Color For...

Page 39: ...e ComfortView Decreases the level of blue light emitted from the screen to make viewing more comfortable for your eyes WARNING The possible long term effects of blue light emission from the monitor may cause personal injury such as digital eye strain eye fatigue and damage to the eyes Using monitor for extended periods of time may also cause pain in parts of body such as neck arm back and shoulder...

Page 40: ...mode to RGB Select this option if your monitor is connected to a computer or DVD player using the HDMI cable YPbPr Select this option if your DVD player supports only YPbPr output Dell 24 27 Monitor Input Source Color Personalize Display Menu Others Brightness Contrast Preset Modes Input Color Format Reset Color YPbPr RGB Hue Use or to adjust the hue from 0 to 100 NOTE Hue adjustment is available ...

Page 41: ...ess Contrast Response Time Sharpness Reset Display 50 Normal Wide 16 9 Aspect Ratio Aspect Ratio Select the image ratio between 16 9 wide 4 3 and 5 4 Sharpness Makes the image look sharper or softer Use or to adjust the sharpness from 0 to 100 Response Time Allows you to set the Response Time to Normal Fast or Extreme Reset Display Restores the display settings to factory defaults ...

Page 42: ...Contrast English Language Transparency Timer Lock 20 20 s Disable Reset Menu Language Set the OSD display to one of eight languages English Spanish French German Brazilian Portuguese Russian Simplified Chinese or Japanese Transparency Select this option to change the menu transparency by using and min 0 max 100 Timer OSD Hold Time Sets the length of time the OSD remains active after you press a bu...

Page 43: ...uage Transparency Timer Lock Reset Menu Power Button Menu Power Buttons Menu Buttons Disable Menu Buttons Through OSD to lock the Menu buttons Power Button Through OSD to lock the Power button Menu Power Buttons Through OSD to lock the all of Menu and Power buttons Disable Press and hold the button next to the power button for four seconds to unlock the buttons Reset Menu Restore the menu settings...

Page 44: ...n LED Reset Personalization Preset Modes Shortcut Key 1 Shortcut key 1 Select from Preset Modes Brightness Contrast Input Source Aspect Ratio set as shortcut key 1 Shortcut key 2 Select from Preset Modes Brightness Contrast Input Source Aspect Ratio set as shortcut key 2 Power Button LED Allows you to set the state of the power light to save energy Reset Persona lization Restores shortcut keys to ...

Page 45: ...eset ENERGY STAR Display Info Reset Others Display Info Displays the monitor s current settings DDC CI DDC CI Display Data Channel Command Interface allows you to adjust the monitor settings using software on your computer Select Off to turn off this feature Enable this feature for best user experience and optimum performance of your monitor Dell 24 27 Monitor Input Source Color Personalize Displa...

Page 46: ...nitor Service Tag Displays the Service Tag The Service Tag is a unique alphanumeric identifier that allows Dell to identify the product specifications and access warranty information NOTE The Service Tag is also printed on a label located at the back of the cover Reset Others Restores other settings such as DDC CI to factory defaults Factory Reset Restores all preset values to the factory default ...

Page 47: ...s receiving from the computer See Resolution specifications for the Horizontal and Vertical frequency ranges addressable by this monitor Recommended mode is 1920 x 1080 You can see the following message before the DDC CI function is disabled S2421HN S2421NX S2721HN S2721NX Dell 24 Monitor The function of adjusting display setting using PC application will be disabled Do you wish to disable DDC CI ...

Page 48: ...I1 HDMI2 input is selected and the corresponding cable is not connected a floating dialog box as shown below appears S2421HN S2421NX S2721HN S2721NX The display will go into Standby Mode in 4 minutes www dell com support S2421HN www dell com support S2421NX Dell 24 Monitor S2421HN S2421NX No HDMI1 Cable or The display will go into Standby Mode in 4 minutes www dell com support S2421HN www dell com...

Page 49: ...isplay Settings 2 Click Advanced display settings 3 Click the dropdown list of Resolution and select 1920 x 1080 4 Click Apply If you do not see 1920 x 1080 as an option you may need to update your graphics driver Depending on your computer complete one of the following procedures If you have a Dell desktop or portable computer Go to https www dell com support enter your service tag and download t...

Page 50: ...mains white Also depending upon the selected input one of the dialogs shown below will continuously scroll through the screen S2421HN S2421NX S2721HN S2721NX The display will go into Standby Mode in 4 minutes www dell com support S2421HN www dell com support S2421NX Dell 24 Monitor S2421HN S2421NX No HDMI1 Cable or The display will go into Standby Mode in 4 minutes www dell com support S2421HN www...

Page 51: ...articles on the surface of the screen 2 Press and hold Button 4 for four seconds a menu appears on the screen 3 Select the built in diagnostics option A gray screen appears 4 Carefully inspect the screen for abnormalities 5 Press Button 1 on the front panel again The color of the screen changes to red 6 Inspect the display for any abnormalities 7 Repeat steps 5 to 6 to inspect the display when it ...

Page 52: ... OSD Perform monitor self test feature check Check for bent or broken pins in the video cable connector Run the built in diagnostics Ensure that the correct input source is selected in the Input Source menu Missing Pixels LCD screen has spots Cycle power on off Pixel that is permanently off is a natural defect that can occur in LCD technology For more information on Dell Monitor Quality and Pixel ...

Page 53: ...the video cable connecting the monitor to the computer is connected properly and is secure Check for bent or broken pins in the video cable connector Wrong Color Picture color not good Change the settings of the Preset Modes in the Color menu OSD depending on the application Adjust R G B value under Custom Color in Color menu OSD Change the Input Color Format to PC RGB or YPbPr in the Color menu O...

Page 54: ...er cable plug it back and then turn on the monitor No Input Signal when user controls are pressed No picture the LED light is white Check the signal source Ensure the computer is not in the power saving mode by moving the mouse or pressing any key on the keyboard Check whether the signal cable is plugged in properly Connect the signal cable again if necessary Reset the computer or video player The...

Page 55: ...es call 800 WWW DELL 800 999 3355 NOTE If you do not have an active Internet connection you can find contact information on your purchase invoice packing slip bill or Dell product catalog Dell provides several online and telephone based support and service options Availability varies by country and product and some services may not be available in your area Online technical assistance www dell com...

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